Hi dazheng,
Need to know ... what is EEPROM used in MCU for ?. I know EEPROM stand for Electrical Erasable Programming ROM but I need to know what's the purpose or where it going to be used in MCU?
I ask this because some of MCU dont have EEPROM ( EEPROM = 0 byte) ie 80NC535 & 80NC321 and the best thing about this MCU (without EEPROM) that's its cheaper than MCU with EEPROM. If it just minor used and can solve it in other method (and not effect my project) , I will use it as I need to lower the cost as much as possible.
Any instruction (ie in proton) that must be used on MCU with EEPROM ?
More explanation greatly appreciated.
Thanks
zuisti
"do we we get the 2543b? i think the nmck-45892zr is better(bcoz bigger voltege).
And my proposition is an additional soft-start circuit with an R-LC and an SiAg-diode ...
does you somone have an idea of how to do a control of an induction single phase motor , i ve done one project in my life but it was for three phase, it was depending on the fase angle i think been a long time ive done it, do ou think i can use this priciple with a single phase motor that is monitor the phase via an opto coupler fed to a mcu and the mcu drive an optocouple to drive a triac by pwm?, my pump is is rated 0.5hp my problem is that i have installed a pump for my bathroom and the maximum pressure for my shower heater is 3 bars and my pump is working at 4 bars, the main problem i fear is that the pipes in my shower get damaged quickly and secondly the frequent start of the automatic pump will damage the stator of my motor.
if she goes backward the water is suck up shower; LOL"